Paper-winding mechanism.



S. M. LANGSTON. PAPER WINDING MECHANISM.

APPLICATION FILED FEB. 5,1913.

Patented July 28, 1.914,

2 SHEETS-SHEET 1.

INVENTOR ATTORNEY S. M. LANGSTON.

PAPER WINDING MEGHANISM.

APPLIUATION FILED FEB.5, 1913.

1,105,281. rammed July 28, 19m

2 SHEETS-SHEET 2.

lflT/VE'SSES ILLVLOE.

W L. Lim IZWWM SAMUEL M. LANGSTON, OF CAMDEN, NEW JERSEY;

PAPER-WINDING MECHANISM.

Specification of Letters Patent.

Patented July 28, 1914.

Application filed February 5, 1913. Serial No. 746,288.

To all whom it may concern Be it known that I, SAMUEL M. LANG- s'rox, a citizen of the United States, and resident of Camden, in the county of Camden and State of New Jersey, have invented certain new and useful Improvements in Paper-VVinding Mechanisms, of which the following is a specification.

This invention relates to certain improvements in winding mechanism for sheet material and more particularly to that type in which the roll upon which the paper or other sheet material is being wound is supported between parallel rollers so that the axis of the roll may move as the diameter of the roll increases.

In a common type of winding mechanism of this character it is customary to provide two parallel supporting rollers and a pres sure roller above the roll of material and pressing the latter down upon the two supporting drums or cylinders.

My invention relates particularly to the means for controlling the operation of this pressure roller, and one object is to insure the maintenance of the desired parallel relationship of the pressure roller and thetwo supporting rollers so that if a comparatively narrow strip of paper is being wound, the pressure roller will act equally at each end of the roll of paper even though the latter be closely adjacent to one end of the winding mechanism.

In order to wind the paper sufliciently tight and form the roll of the desired hardness it is necessary that the pressure roller exert a considerable force upon the roll of paper and anFther nbject of my invention is to permit the accomplishment of this result without the necessity for employing'a pressure roller of great mass.

It often happens that the paper along one edge portion'will run slightly thinner than at the opposite edge, so that the roll will not wind astightly at the end Where the paper is thinner as at the other. To overcome this I so mount the pressure roller that during the winding operation the opposite ends of the pressure roller will rise simultaneously and to the same extent, the roller moving in parallelism, but provide means whereby one end of th roller may be slightly raised or lowered in respect to the other so as to insure the application of uniform pressure at opposite ends of the roll of paper being wound.

Other objects and advantages of my improved construction will be pointed out hereinafter and the novel features definedin the claims.

Reference is had to the accompanying tion through the mechanism illustrated inv Fig. 1; Fig. 4: is an enlarged end View of the upper part of the machine; Fig. 5 is a transverse section on the line 55 of Fig. 3; and Fig. 6 is a sectional detail corresponding to Fig. 5, but showing a slightly modi-,

ficd adjusting mechanism.

My invention. is applicable to slitters and rewinders of the general type shown in previous Patents 1,009,756 and 1,009,757 although it may be utilized where it is desired merely to rewind the paper without slitting or with merely a trimming of the edges of the paper. The principle of operation whereby the paper is wound on the roll with the desired degree of hardness is substantially the same as that employed in my two previous patents, above referred to, and therefore, it is not thought necessary to illustrate or describe this part of the machine except in a general way.

In the machine illustrated there are employed two substantially parallel. cylinders or friction rollers 10. and 11, mounted to rotate in the same direction and at the same speed and to support the roll 12 upon which the paper is being wound. Above these friction rollers is a pressure roller 13 mounted to move vertically on suitable guides as the roll of paper 12 increases in size and rises.

My invention as previously stated relates particularly to the means for controlling the operation of the pressure roller 13 and facilitating the adjustment of the latter. the spelcific mechanism illustrated which constitutes merely one embodiment of my invention Imount this pressure roller upon a shaft 14 journaled in suitable vertically movable bearings .15 at opposite ends of the machine. One end of the shaftcarries a beveled gear 16 meshing with a beveled gear 17 keyed toand slidable on a verticalwith guide shaft 18. The beveled gear 17 is supported between guides carried by one of the bearings so that as the bearings move vertically the beveled gears will at all times remain in mesh and the pressure roller may be rotated upon the rotation of the shaft 18. Each bearing 15 has rigidly connected thereto a vertically disposed rack bar 19 slidable in the frame 20 of the machine and at the upper end of the machine a shaft 21 is mounted in bearings 22 and is provided ears 27 meshing with the two racks 19. s the two gears are normally rigid with the shaft the rising of one end of thepressure roller 13 will cause a vertical movement of the corresponding rack bar; a rotation of the shaft 21, and a corresponding rising of the other rack bar so t at any vertical movement of one end of the pressure roller is accompanied by a corresponding vertical movement of the opposite end. The pressure roller thus in rising as the roll of paper increases in diameter remains at all times in parallelism with the two friction supporting rollers 10 and 11. In case a comparatively narrow roll of paper is to be wound and this be placed at one end of the 'machine it is evident that the pressure roller will act equally upon opposite ends of the roll of paper which would not be the case were the pressure roller independently movable at opposite ends. This arrangement of gears and rack bar also greatly facilitates the raising of the pressure roller out of engagement with the paper when it is desired to remove the latter from the machine or adjust it in any way. The shaft 21 is preferably provided with a hand wheel 24 by the rotation of which the pressure roller may be readily raised.

As previously stated one important feature of my invention resides in the means employed whereby a pressure roller of comparatively small mass may exert a heavy pressure upon the paper. To accomplish this I provide the shaft at one end with a friction drum 25 and pivotally mount. two brake shoes 26 upon the frame. These brake shoes may have any suitable form of friction surface such for instance as inserts 27 and each is curved so as to engage with approximately one-half of the periphery of the drum 25. A suitable screw 28 may beemployed for drawing together the free ends of the brake shoes so as to grip the drum there-between and thus apply any desired degree pf resistance to the rotation of the shaft 21. As the rollof paper increases in size it is necessary for the pressure roller 13 to move vertically and this vertical movement necessitates a rotation of the shaft 21. By applying a heavy resistance to the rotationof this shaft 21 I retard or resist the upward movement of the roller 13, so that the roller even though of light mass will act upon the roll of paper with a pressure determined by the amount of friction applied on the drum 25. By adjusting the clamping screw 28 the pressure may be controlled at will. WVhen it is desired to remove the roll of paper from the machine the clamping screw 28 may be loosened to release the drum and the pressure roller readily raised by the hand wheel 24:. The clamping screw may then be tightened to hold the pressure roller in its elevated position during theremoval of the roll of paper. The drum and brake shoes thus operate not only to control the application of cpressure to the paper being wound, but also serve as a means for holding the roller in elevated position when the machine is at rest.

In-case it is desired to apply greater pressure to one end of the roll than to the other or in case thepaper is slightly thinner along one edge than at the other I provide means for slightly raising or lowering one end of the pressure roll in respect to the friction supporting rollers and thus insure the movement of the pressure roller in parallelism in the adjusted position during the wiiiding' operation. One means whichmay be employed to accomplish this result is illustrated in detail in Figs. 3 and 5. In this embodiment of my invention one of the gears 23 is loose on the shaft and is formed either integral or rigid with a short sleeve 29 which latter has an outwardly projecting arm or stud 30. This stud or arm-lies adjacent to the surface of a disk which in the present embodiment-is the hand wheel 24, but of course it may be separate from this hand wheel. Upon this disk are two lugs 31 upon opposite sides of the arm and within each stud is a set screw 32 engaging with the stud. The disk or hand wheel is keyed to the shaft so that it can not rotate in respect thereto and the set screws normally hold the gear wheel against rotation in respect to the shaft. By loosening one set screw to a slight extent and tightening the other to a a corresponding raising or lowering of one end of the pressure roller. After the pressure roller has been thus adjusted the gears will rotate simultaneously with the shaft and the pressure 'roller will be raised in parallelism during the winding of the paper. Other means may be employed .for facilitating a slight angular adjustment of one gear wheel in respect tov the shaft, but it is important that the adjusting mechanism be such that fine adjustment may be secured and the gear then held rigid in position and prevented from accidental loosening or slipping. In Fig. 6 I have shown two lugs 31 corresponding to the two lugs 31 previously referred to and in this form I employ only a single screw 32, which may be held from longitudinal movement in respect to the lugs but have its intermediate portion constituting a worm gear meshing with teeth upon-the free end of the stud or arm 30. It is evident that a rotation of this worm will swing the arm but the tendency of the arm to swing will not cause a corresponding rotation of the worm.

Various other changes may be made in the construction and arrangement of parts without departing from the spirit of my invention.

Having thus described my invention, what I claim as new and desire to secure by Letters-Patent is:

1. Winding mechanism including rack bars movable endwise as the roll of material being wound increases in size, gears connected together to rotate simultaneously and intermeshing with said rack bars and adjusting means for rotating one of said gears with respect to the other to secure the uniform application of pressure at both ends of the said roll.

2. Winding mechanism including a bodily movable roller, rack bars operatively connected to the opposite ends of said roller and movable endwise upon said bodily movement, gears rigidly connected together and intermeshing with said rack bar to insure the equal and simultaneous reciprocation of both bars and an adjusting screw for rotating one of said gears on this shaft and in respect to the other gear.

3. Winding mechanism including a bodily movable roller, rack bars movable endwise by the movement of said roller, ashaft,

a gear carried thereby and meshing with one of said rack bars, a second gear loosely mounted thereon and meshing with the'other of said rack bars, a member fixed on said shaft and adjusting means connecting said fixed member and said loose gear.

4. Winding mechanism including rack bars movable endwise as the roll of material being wound increasesin size, a shaft, a gear carried thereby and meshing with one ofsaid rack bars, a second gear loosely mounted thereon and meshing with the other of said rack bars, a member fixed on said shaft, and means for locking said second-mentioned gear to said fixed member in circumferen tially adjusted position.

ried by said fixed member, a stud carried by i said gear and disposed between said lugs, and an adjusting screw for holding said stud in adjusted position between said lugs.

6. Winding mechanism including a pressure roller, a shaft therefor, bearings for said. shaft, movable bars connected to said bearings, a second shaft rotatable upon the movement of said bars, a member rigid on said second mentioned shaft, a member loose on said second mentioned shaft and means for adjusting one of said members circum ferentially of the shaft and in respect to the other member to give one end of said roller bodily movement in respect to the other end. r

7. Winding mechanism including a shaft bodily movable as the roll of material being wound increases in size, a second shaft, separate rack bars each having at oneend thereof a bearing for one of said shafts, pinions on the other of said shafts and meshing with said rack bars, and means for circumferentially adjusting one of said pinions in respect to its shaft to thereby bring said shafts to parallel or slightly non-parallel position.

8. Winding mechanism including two substantially parallel shafts, one being bodily movable in respect to the other as the roll of material being wound increases in size, rack bars having journals at their ends for one of said shafts, pinions on the other of said shafts in mesh with said rack bars, a hand wheel on said last mentioned shaft for effecting relative movement of said pinions and said rack bars and connections between one of said pinions and said hand wheel and permitting limited relative circumferential movement.

Signed at New York city in the county of New York and Stateof New York this 4th day of February A. D. 1918.

SAMUEL M. LANGSTON.

Witnesses:

CLAIR W. FAIRBANK, FLORENCE LEVIEN. 

